Implemented help scree

nnfc.awk

@@ -192,6 +192,22 @@ function autohome(chres, lres, i) {
 }
 
 function help() {
+  print "nnfc: no-nonsense FreeCell in POSIX AWK"
+  print "Script parameters:"
+  print "-v ASCII=1\tuse ASCII instead of Unicode suit chars"
+  print "-v MONOCHROME=1\t don't use colors"
+  print "-v SEED=xxxxx\tset game seed number (M$-compatible)"
+  print "Commands: q - quit, u - undo, ah - autohome, h -  this help"
+  print "Moves: [digit][digit], where \"digits\" are:"
+  print "- 0 is foundation (can be omitted)"
+  print "- 1 to 8 are column (tableau) numbers"
+  print "- a, b, c, d are freecell IDs"
+  print "Examples:"
+  print "7a\tmove from column 7 to freecell a"
+  print "63\tmove from column 6 to column 3"
+  print "4\tmove from column 4 to the foundation"
+  print "c\tmove from freecell c to the foundation"
+  print "ah\tautomatically move all eligible cards to the foundation"
   return 1 # continue
 }