-'let :=' for immediate evaluation in assignment.
+'let :=' for immediate evaluation in assignment. Does this work
+for included files?
+
+Default parameters, ie:
+ goal foo (name, release = true) = ...
+You might only allow defaults to be added to the end, or you
+might allow goals to be called with labelled parameters.
+
+Functions, eg. wildcard("*.c"). These should be defined as shell
+scripts with a selection of common functions defined in stdlib.
+
+Fix: You must use 'all ()' on the command line.