Index: modules/map/track-map-display.tcl
--- modules/map/track-map-display.tcl.orig
+++ modules/map/track-map-display.tcl
@@ -51,7 +51,7 @@ package provide map::track::map-display 0.1
 # # ## ### ##### ######## ############# ######################
 ## Requirements
 
-package require Tcl 8.6
+package require Tcl 8.6-
 #
 package require debug                  ;# - Narrative Tracing
 package require debug::caller          ;#
