s/^(hdr.firstused =) (\d+)/\1 FIRSTUSED/;
s/^(hdr.freemap\[0-2] = \[base,size]).*/\1 [FREEMAP..]/;
s/^(entries\[0-2] = \[hashval,nameidx,incomplete,root,local]).*/\1 [ENTRIES..]/;
s/^(hdr.firstused =) (\d+)/\1 FIRSTUSED/;
s/^(hdr.freemap\[0-2] = \[base,size]).*/\1 [FREEMAP..]/;
s/^(entries\[0-2] = \[hashval,nameidx,incomplete,root,local]).*/\1 [ENTRIES..]/;