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Diffstat (limited to 'doc/expert/pre_colo')
| -rw-r--r-- | doc/expert/pre_colo | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/expert/pre_colo b/doc/expert/pre_colo index 5a2108e..df4459b 100644 --- a/doc/expert/pre_colo +++ b/doc/expert/pre_colo @@ -35,6 +35,14 @@ There is no default colour, so the user must ensure that the root galley or each of its components is enclosed in a @@SetColour symbol whose left parameter is not {@Code "nochange"}. @PP +In addition to setting the colour used in the following object, the +@@SetColour command also sets the underline colour in that object, +like @@SetUnderlineColour from Section {@NumberOf underline_colour}. +While a case could be made for keeping these two attributes of +style independent, most people want to underline in the same colour +as the text most of the time, and this behaviour gives this without +any need to use @@SetUnderlineColour explicitly. +@PP Lout makes no attempt to understand colour, it simply prints the PostScript or PDF commands when appropriate. This has the advantage of permitting access to any of PostScript's colour models (some |