question: why belly button lint is always dark colored even if I wear a white shirt.
comment: I imagine this is due to it being a build up of small fibres rolled up into a ball and mixed with sweat/oil. This is just the colour it accumulates to
passages: Lint is useful to examine in forensic science because it is accumulated over time, and because the fibers shed from clothing adhere to not only that clothing, but also other particles to which the carrier is exposed. The lint on a person's clothing is therefore likely to contain material transferred from the various environments through which that person has passed, enabling forensic examiners to collect and examine lint to determine the movements and activities of the wearer. Examiners may use various chemicals to isolate lint fibers from different articles of clothing based on differences in color and other characteristics.
   Section::::Varieties of lint.:Navel lint.
   Section::::Problems related to lint.:Mechanical problems.
  
  Lint contamination also presents what may be the most serious threat of damage to delicate mechanical devices. In order to prevent lint contamination, workers entering clean rooms are generally required to wear an outer layer of clothing made from artificial fibers that are longer and thicker, and therefore much less likely to shed any material. Lint-resistant clothing materials include elastic fabrics like spandex (or Lycra), for which the fibers will tend to stretch rather than break, and longer, stronger non-woven polyolefin fibers.
  
  Section::::Problems related to lint.:Other problems.
   The etymology of the modern word "lint" is related to "linting", the term used for the cultivation of the shorter fibers from the cotton plant ("Gossypium"), also called "lint", from which lower-quality cotton products are manufactured. Lint is composed of threads of all colors, which blend hues and may appear to be a uniform grey.
  
  Section::::Varieties of lint.
  
  Section::::Varieties of lint.:Dryer lint.
  
  Dryer lint is lint generated by the drying of clothes in a clothes dryer; it typically accumulates on a dryer screen. Underwriters Laboratories recommends cleaning the lint filter after every cycle for safety and energy efficiency.
   Over the years, different versions of lint were developed for many C and C++ compilers and while modern-day compilers have lint-like functions, lint-like tools have also advanced their capabilities. For example, Gimpel's PC-Lint, used to analyze C++ source code, is still being sold even though it was introduced in 1985.
  
  Section::::Overview.
   Stephen C. Johnson, a computer scientist at Bell Labs, came up with lint in 1978 while debugging the yacc grammar he was writing for C and dealing with portability issues stemming from porting Unix to a 32-bit machine. The term "lint" was derived from the name of the undesirable bits of fiber and fluff found in sheep's wool. In 1979, lint was used outside of Bell Labs for the first time in the seventh version (V7) of the Unix operating system.
   Lint on clothing is generally considered unattractive and unprofessional. Furthermore, lint may be abrasive and may damage the clothing itself. For these reasons, visible lint is often removed with a lint remover or clothes brush. The accumulation of lint during clothes cleaning can be reduced with the use of a fabric softener, which reduces the amount of static electricity on clothing surfaces and therefore prevents the lint from sticking to the clothes.
   Lint (material)
  
  Lint is the common name for visible accumulations of textile fibers and other materials, usually found on and around clothing. Certain materials used in the manufacture of clothing, such as cotton, linen, and wool, contain numerous, very short fibers bundled together. During the course of normal wear, these fibers may either detach or be jostled out of the weave of which they are part. This is the reason that heavily used articles like shirts and towels become thin over time, and why these particles collect in the lint screen of a clothes dryer.
   "Staphylococcus" and "Corynebacterium" were among the most common types of bacteria found in the navels of this project's volunteers and these types of bacteria have been found to be the most common types of bacteria found on the human skin in larger studies of the skin microbiome (of which the Belly Button Biodiversity Project is a part). (In these larger studies it has been found that females generally have more "Staphylococcus" living in their skin microbiomes (usually "Staphylococcus epidermidis") and that men have more "Corynebacterium" living in their skin microbiomes.) 
   The analysis performed by lint-like tools can also be performed by an optimizing compiler, which aims to generate faster code. In his original 1978 paper, Johnson addressed this issue, concluding that "the general notion of having two programs is a good one" because they concentrated on different things, thereby allowing the programmer to "concentrate at one stage of the programming process solely on the algorithms, data structures, and correctness of the program, and then later retrofit, with the aid of lint, the desirable properties of universality and portability".
   In the South African order of wear, the "Lint voor Verwonding" has the status of a campaign medal and, even though it has no accompanying medal, it takes precedence in wear after the "Medalje voor de Anglo-Boere Oorlog" and before the King's South Africa Medal. As worn on uniform, the riband was mounted with other decorations and medals on the medal rack, as illustrated in the main picture. On a ribbon bar it was mounted like a regular medal ribbon.
   Because of their low surface area, static cling causes fibers that have detached from an article of clothing to continue to stick to one another and to that article or other surfaces with which they come in contact. Other small fibers or particles also accumulate with these clothing fibers, including human and animal hair and skin cells, plant fibers, and pollen, dust, and microorganisms.
   According to the Belly Button Biodiversity Project at North Carolina State University, there are two types of microorganisms found in the navel and surrounding areas. Transient bacteria (bacteria that does not reproduce) forms the majority of the organisms found in the navel, and an estimated 1400 various strains were found in 95% of participants of the study.
   Section::::Varieties of lint.:Pocket lint.
  
  Pocket lint (also known as gnurr) is debris including bits of fabric as well as small shreds of paper and tissue that are often found in pockets. It may be caused by running the clothing through a washing machine one or more times, causing the pocket lining or contents to compact and shred.
   Product dyeing, also known as garment dyeing, is the process of dyeing products such as hosiery, sweaters, and carpet after they have been produced. This stage of dyeing is suitable when all components dye the same shade (including threads). This method is used to dye sheer hosiery since it is knitted using tubular knitting machines and then stitched prior to dyeing. Tufted carpets, with the exception of carpets produced using solution dyed fibers, are often dyed after they have been tufted. This method is not suitable for apparel with many components such as lining, zippers, and sewing thread, as each component may dye differently. The exception is tinting jeans with pigments for a “vintage” look. In tinting, color is used, whereas in other treatments such as acid-wash and stone-wash, chemical or mechanical processes are used. After garment construction, these products are given the "faded" or "used" look by finishing methods as opposed to dyeing.
   The raw, cleaned qiviut is spun and then the yarn is washed. Natural qiviut is soft grayish brown in color, but it takes dye well and can be found for sale in myriad colors. Bleaching weakens the fiber, however, so many spinners and knitters recommend using only overdyed natural qiviut, which has darker, more subdued colors.
   The Ladyes go into the bath with Garments made of a fine yellow canvas, which is stiff and made large with great sleeves like a parson’s gown; the water fills it up so that it is borne off that your shape is not seen, it does not cling close as other linning, which Lookes sadly in the poorer sort that go in their own linning. The Gentlemen have drawers and wastcoates of the same sort of canvas, this is the best linning, for the bath water will Change any other yellow.
   The most common denim is indigo denim, in which the warp thread is dyed, while the weft thread is left white. As a result of the warp-faced twill weaving, one side of the textile is dominated by the blue warp threads and the other side is dominated by the white weft threads. This causes blue jeans to be white on the inside. The indigo dyeing process, in which the core of the warp threads remains white, creates denim's signature fading characteristics.
  
  Section::::Etymology and origin.
  
  The name "denim" derives .
   The men usually use the colors blue, or black to make their shirts, buttoned to a side. Unmarried men surround their head with a fabric of white color, whereas married men wear blue.
   Lint (software)
  
  lint, or a linter, is a tool that analyzes source code to flag programming errors, bugs, stylistic errors, and suspicious constructs. The term originates from a Unix utility that examined C language source code.
  
  Section::::History.
   As for Mehndi, natural brown henna dyes are safe to use when mixed with ingredients such as lemon juice. Another option is Jagua, a dark indigo plant-based dye that is safe to use on the skin and is approved for cosmetic use in the EU.
  
  Section::::Body marbling.
   "Selvedge denim" refers to a unique type of selvedge that is made by passing one continuous cross-yarn (the weft) back and forth through the vertical warp beams. This is traditionally finished at both edges with a contrasting warp (most commonly red); that is why this type of denim is sometimes referred to as "red selvedge." This method of weaving the selvage is possible only when using a shuttle loom.
   If the purl yarns are equity, the nodules are not transferred. When 1-1.5 m left to the end of form, woven fabric is cut, as the purl yarn woven fabric with an increasing of woven linen is tightened and can break. After the cutting, the edges of the carpet are styled with purl of the remaining threads. From three or four filaments they make small knots, it’s provides durability of the carpet.
  
  Making of takir gilam (weaving technique) is a very complex process, and they used average 12–14 kg of yarn.
   The placket of the shirt is the part that holds the buttons and the button holes. This is highly regarded as the focal point of the dress shirt when worn casually. Unfortunately due to the lack of reinforcement, the weight of the collar will cripple the placket throughout the day. No amount of starch, ironing, pressing nor does the type of fabric matter when it comes to combating the collapse.
  
  Section::::Materials.
   The idea came from a simple observation when he was back at his family home in Huddersfield. His Mum knew he was never moving home so had cleared and sorted some of his room. There was a pile of denim where he noticed the different shades of indigo.
  
presuppositions: Belly button lint comes from clothing.
corrections: Belly button lint comes from clothing mixed with sweat/oil.
raw_presuppositions: Belly button lint comes from clothing. Belly button lint reflects the color of clothing worn.
raw_corrections: Belly button lint comes from clothing mixed with sweat/oil. Belly button lint is mixed with sweat and oils over time which discolors it.