FoldMaster supports the creating and administration of text folds. With a closed fold instead of the text only a heading is displayed, which describes the section hidden therein. Subroutines, objects, variable declarations etc. in folds are hidden for good reason. A hierarchical tree structure is produced by the nesting of folds, as you know from the directory trees of the different operating systems. This provides the optimum outline for the programmer, also with very large source texts.