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-rwxr-xr-xGradeBook_lib.tcl2
1 files changed, 2 insertions, 0 deletions
diff --git a/GradeBook_lib.tcl b/GradeBook_lib.tcl
index f53ede5..cd4b4b8 100755
--- a/GradeBook_lib.tcl
+++ b/GradeBook_lib.tcl
@@ -3,6 +3,8 @@
# vim:set ft=tcl: \
exec tclsh "$0" "$@"
+# require Tcl version of at least 8.5 since I use 'ni' and 'in' in expressions for lists
+package require Tcl 8.5
# internal version of this code
set VERSION 1.1.1