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-rw-r--r--src/serdi.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/serdi.c b/src/serdi.c
index 91cffe46..bc7c9d18 100644
--- a/src/serdi.c
+++ b/src/serdi.c
@@ -42,7 +42,8 @@ print_usage(const char* name, bool error)
{
FILE* const os = error ? stderr : stdout;
fprintf(os, "Usage: %s [OPTION]... INPUT [BASE_URI]\n", name);
- fprintf(os, "Read and write RDF syntax.\n\n");
+ fprintf(os, "Read and write RDF syntax.\n");
+ fprintf(os, "Use - for INPUT to read from standard input.\n\n");
fprintf(os, " -h Display this help and exit\n");
fprintf(os, " -o SYNTAX Output syntax (`turtle' or `ntriples')\n");
fprintf(os, " -s INPUT Parse INPUT as string (terminates options)\n");