/** Start child process.
* The string "what" contains a commandline with arguments separated
- * by spaces and encoded in the filesystem encoding. The string "path"
- * contains the path to be prepended to the TEXINPUTS environment
- * variable and encoded in utf-8. Unset "process_events" in case
- * UI should be blocked while processing the external command.
+ * by spaces and encoded in the filesystem encoding. "$$s" will be
+ * replaced accordingly by commandPrep(). The string "path" contains
+ * the path to be prepended to the TEXINPUTS environment variable and
+ * encoded in the path to be prepended to the TEXINPUTS environment
+ * variable and utf-8. Unset "process_events" in case UI should be
+ * blocked while processing the external command.
*/
int startscript(Starttype how, std::string const & what,
std::string const & path = empty_string(),