basic docs for htdp collection

collects/htdp/htdp.scrbl

@@ -0,0 +1,75 @@
+#lang scribble/doc
+
+@(require scribble/manual (for-label scheme))
+
+@title[#:style '(toc) #:tag "htdp"]{HtDP TeachPacks}
+
+@section{TeachPacks}
+
+TeachPacks for "How to Design Programs" provide functionality that extends
+the teaching languages for specific exercises. The extensions fit smoothly 
+to the teaching languages so that students don't get nonsensical error
+messages or undocumented language features through the backdoor. 
+
+@; -----------------------------------------------------------------------------
+@section{Errors} 
+
+@defmodule[htdp/error]
+
+To provide uniform error messages from the TeachPacks, this module
+provides several functions: 
+
+@defproc[(check-arg) void?]{
+ }
+
+@defproc[(check-arity) void?]{
+ }
+
+@defproc[(check-proc) void?]{
+ }
+
+@defproc[(check-result) void?]{
+ }
+
+@defproc[(check-list-list) void?]{
+ }
+
+@defproc[(check-color) void?]{
+ }
+
+@defproc[(check-fun-res) void?]{
+ }
+
+@defproc[(check-dependencies) void?]{
+ }
+
+@defproc[(natural?) void?]{
+ }
+
+@defproc[(find-non) void?]{
+ }
+ 
+@defproc[(tp-exn?) void?]{
+ }
+
+@defproc[(number->ord) void?]{
+ }
+
+@section{Testing} 
+
+@; -----------------------------------------------------------------------------
+@defmodule[htdp/testing #:use-sources (test-engine/scheme-tests)]
+
+The library re-exports the following identifiers from test-engine/scheme-tests:
+
+ @scheme[build-test-engine]
+ @scheme[builder]
+ @scheme[display-results]
+ @scheme[error-handler]
+ @scheme[exn:fail:wish]
+ @scheme[generate-report]
+ @scheme[get-test-engine]
+ @scheme[reset-tests]
+ @scheme[run-tests]
+ @scheme[scheme-test-data]
+ @scheme[signature-test-info%]