a # 1 60 R ' r#tname preedit m                                          '
a # a,[1]  ' (tname,'' in use'')escape 0^=Lnc tname                       '
a # a,[1]  ' r#Lfx tname on''"'',Fm                                       '
a # a,[1]  ' $0                                                         '
a # a,[1]  '"preedit - prepare matrix for function-like editing         '
a # a,[1]  '"from ''the apl handbook of techniques'' copyright 1978, ibm. '
a # a,[1]  '"-tname is a temporary name to be assigned to a copy of the '
a # a,[1]  '" matrix, m, so that it may be edited as if it were a       '
a # a,[1]  '" defined function.  tname is a character string.           '
a # a,[1]  '"-when editing is complete, key: r#postedit tname, where r  '
a # a,[1]  '" r can be the old or new name of the edited matrix.        '
a # a,[1]  '"-uses: Gescape Gon                                         '
Lfx a