doc: Merge/update old String docs into source [#124 state:fixed_in_branch]
doc: Merge/update old String docs into source [#124 state:fixed_in_branch]

sdumitriu/prototype,ShefronYudy/prototype,erpframework/prototype,292388900/prototype,292388900/prototype,ridixcr/prototype,baiyanghese/prototype,fashionsun/prototype,sdumitriu/prototype,fashionsun/prototype,leafo/prototype,Gargaj/prototype,Gargaj/prototype,lamsieuquay/prototype,loduis/prototype,sstephenson/prototype,ldf7801528/prototype,Jiasm/prototype,ldf7801528/prototype,sdumitriu/prototype,ldf7801528/prototype,lamsieuquay/prototype,loduis/prototype,ridixcr/prototype,ShefronYudy/prototype,sstephenson/prototype,292388900/prototype,ridixcr/prototype,erpframework/prototype,leafo/prototype,Jiasm/prototype,sstephenson/prototype,fashionsun/prototype,lamsieuquay/prototype,baiyanghese/prototype,ShefronYudy/prototype,erpframework/prototype,loduis/prototype,Gargaj/prototype,Jiasm/prototype