doc: add documentation about the LogHolder position manipulation
doc: add documentation about the LogHolder position manipulation

KublaikhanGeek/cgeo,schwabe/cgeo,madankb/cgeo,KublaikhanGeek/cgeo,lewurm/cgeo,auricgoldfinger/cgeo,tobiasge/cgeo,mucek4/cgeo,Bananeweizen/cgeo,brok85/cgeo,tobiasge/cgeo,Bananeweizen/cgeo,cgeo/cgeo,pstorch/cgeo,rsudev/c-geo-opensource,cgeo/cgeo,pstorch/cgeo,matej116/cgeo,kumy/cgeo,S-Bartfast/cgeo,rsudev/c-geo-opensource,samueltardieu/cgeo,Huertix/cgeo,marco-dev/c-geo-opensource,SammysHP/cgeo,S-Bartfast/cgeo,S-Bartfast/cgeo,SammysHP/cgeo,Huertix/cgeo,Huertix/cgeo,marco-dev/c-geo-opensource,matej116/cgeo,superspindel/cgeo,yummy222/cgeo,schwabe/cgeo,kumy/cgeo,yummy222/cgeo,mucek4/cgeo,ThibaultR/cgeo,marco-dev/c-geo-opensource,ThibaultR/cgeo,xiaoyanit/cgeo,superspindel/cgeo,samueltardieu/cgeo,lewurm/cgeo,auricgoldfinger/cgeo,auricgoldfinger/cgeo,madankb/cgeo,lewurm/cgeo,vishwakulkarni/cgeo,pstorch/cgeo,superspindel/cgeo,xiaoyanit/cgeo,ThibaultR/cgeo,SammysHP/cgeo,tobiasge/cgeo,rsudev/c-geo-opensource,vishwakulkarni/cgeo,Bananeweizen/cgeo,KublaikhanGeek/cgeo,mucek4/cgeo,brok85/cgeo,cgeo/cgeo,kumy/cgeo,cgeo/cgeo,xiaoyanit/cgeo,schwabe/cgeo,brok85/cgeo,vishwakulkarni/cgeo,schwabe/cgeo,madankb/cgeo,samueltardieu/cgeo,yummy222/cgeo,matej116/cgeo