dot/xinitrc: Document the new Emacs geometry parameters.

diff --git a/dot/xinitrc b/dot/xinitrc
index fe4b440..8bff85f 100755 (executable)
--- a/dot/xinitrc
+++ b/dot/xinitrc
@@ -222,6 +222,10 @@ term=$(pick_program terminal pterm Eterm xterm)
 
 ## Emacs window measurements.
 ##
+## e_colsz = width of a column in characters (from `emacs-width' metaconfig)
+## e_charwd = width of a character in pixels (assume `6x13')
+## e_colextra = additional per-column overhead in pixels
+## e_colextrachars = additional per-column overhead in character units
 ## e_colwd = basic width of a column in pixels
 ## e_hextra = extra horizontal width in pixels
 ##     Width of an N-column Emacs frame in pixels will be