--- a/mod7.nsb	Tue Oct 18 17:32:24 2022 -0400
+++ b/mod7.nsb	Tue Oct 18 18:42:18 2022 -0400
@@ -1,5 +1,5 @@
 {if:{argslen}|=|1|then:{
-if:{arg:0}|=|--oem|then:{choose:95|96|97|98|99|00|01|02|03}{range:100|365}-OEM-{lua:
+if:{arg:0}|=|--oem|then:{choose:95|96|97|98|99|00|01|02|03}{set:day|{range:1|365}}{repeat:{len:{substring:{repeat:3|a}|{len:{get:day}}}}|0}{get:day}-OEM-{lua:
 function sumdigits(n)
 	local sum = 0
 	while n > 0 do
@@ -14,7 +14,7 @@
 	the = (math.random(1, 99999)*10)+math.random(1,7)
 end
 print(string.format("%07d", the))
-}-{range:10000|99999}|else:
+}-{set:day|{range:1|99999}}{repeat:{len:{substring:{repeat:5|a}|{len:{get:day}}}}|0}{get:day}|else:
 {set:first|{range:111|999}}{
 if:{get:first}|=|333|then:{set:first|332}}{
 if:{get:first}|=|444|then:{set:first|443}}{
@@ -31,4 +31,24 @@
 end
 print(string.format("%07d", the))
 }}
-|else:`.t mod7 <--normal> OR <--office> OR <--oem>`}
\ No newline at end of file
+|else:{code:
+MOD7(1)
+
+NAME
+    mod7
+
+SYNOPSIS
+    .t mod7 [ option ]
+
+DESCRIPTION
+    A generator for old Microsoft products using the
+    mod7 key algorithm.
+
+OPTIONS
+    --normal
+        Generate a normal Windows 95/NT 4 key.
+    --office
+        Generate a normal Office 97 key.
+    --oem
+        Generate an OEM Windows 95/NT 4 key.
+}}