Hi, here's one or two questions about the specification of keywords and 
such in gui/gretl.lang and the way it interacts with syntax highlighting.
I'm working with the relatively new way to specify restrictions in a 
system, using the "inject" command inside a restrict block, introduced 
in gretl 2021b. I'm noticing that "inject" is not syntax-colored. Would 
it be correct to add a line "<keyword>inject</keyword>" in the
section 
<context id="commands" style-ref="command"> in the gretl.lang
file?
Also, I'm seeing "TRUE" and "FALSE" in the $-accessor section 
("internalvars"), although they are not such accessors. (I.e., $TRUE 
doesn't work, and TRUE isn't syntax-colored.) Not sure how to solve 
that. Maybe introduce a new section "internalvars2" that do not take a $ 
prefix?
thanks
sven