doc fixes

svn: r7832

original commit: 5f312dcbde3ed674c3af3d4d5ded23eb1a93ebc8

collects/scribblings/gui/editor-overview.scrbl

@@ -429,7 +429,7 @@ Snip class objects can be added to the eventspace-specific
 
 If a snip class's name is of the form @scheme["(lib ...)"], then the
  snip class implementation can be loaded on demand. The name is parsed
- using @scheme[read]; if the result has the form @scheme[(libKW string
+ using @scheme[read]; if the result has the form @scheme[(lib _string
  ...)], then it is supplied to @scheme[dynamic-require] along with
  @scheme['snip-class]. If the result is a @scheme[snip-class%] object,
  it is inserted into the current eventspace's snip class list, and

collects/scribblings/gui/snip-class.scrbl

@@ -47,7 +47,10 @@ To define a class of snips that can be saved or cut-and-pasted:
 @itemize{
 
  @item{Create an instance of @scheme[snip-class%], implementing the
-       @method[snip-class% read] method.}
+       @method[snip-class% read] method. Export the
+       @scheme[snip-class%] instance as @scheme[snip-class] from a
+       module, and use a classname of the form @scheme["(lib ...)"] as
+       described in @|snipclassdiscuss|.}
 
  @item{For each instance of the snip class, set the snip's class object 
        with @method[snip% set-snipclass].}