Note coordinates will be read from standard in
@@ -63,7 +63,9 @@ int main(int argc, char *argv[]) {
.scanFormat = "%d",
.valueName = "i",
.value = &ij.i,
- .helpText = "I coordinate."};
+ .helpText =
+ "I coordinate. If not specified \"i j\" pairs will be read "
+ "from stdin."};
Arg jArg = {.names = {"-j", NULL},
.scanFormat = "%d",
.valueName = "j",
