catchfilebetweentags – Catch text delimited by docstrip tags

This pack­age (built us­ing the fa­cil­i­ties of catch­file) pro­vides a macro \catch­file­be­tween­tags acts like the orig­i­nal \catch­file but only ex­tracts a por­tion of the file in­stead of the com­plete file. The ex­tracted por­tion can be de­lim­ited by strings or by doc­strip tags:%<*tag> .... % (com­ments in the caught re­gion may be in­cluded or dropped).