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-rw-r--r--source/tools/pdfclean.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/source/tools/pdfclean.c b/source/tools/pdfclean.c
index 22937186..5dd0d700 100644
--- a/source/tools/pdfclean.c
+++ b/source/tools/pdfclean.c
@@ -19,6 +19,7 @@ static void usage(void)
"\t-g\tgarbage collect unused objects\n"
"\t-gg\tin addition to -g compact xref table\n"
"\t-ggg\tin addition to -gg merge duplicate objects\n"
+ "\t-gggg\tin addition to -ggg check streams for duplication\n"
"\t-l\tlinearize PDF\n"
"\t-a\tascii hex encode binary streams\n"
"\t-d\tdecompress streams\n"