Is that how one interfaces with rarely-used document archives? via groping?
Yes, didn't you know? You should have RTFM:
# man gropeGROPENAME grope, egrope, fgrope, rgrep - print lines matching a pattern
in rarely used document archivesSYNOPSIS grope (options) PATTERN (FILE...)DESCRIPTION grope searches the named archives FILEs (or standard input if none are
named, or the file name - is given) for lines containing a match to the
given PATTERN. By default, grope prints the matching lines. In addition, three variant programs egrope, fgrep and rgrep are avail-
able. egrep is the same as grope -E. fgrope is the same as
grope -F. rgrope is the same as grope -r.BUGS Backreferences are very slow, and may require exponential time.
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