Text Completer enhances built-in text editors by a facility that allows 
     you to start typing in the first few characters of a name known to 
     VisualWorks - i.e. a class name, a method selector, or something alike - 
     and then let an appropriate completer make a guess about what you started 
     to type in and fill in the rest. 

        You invoke this facility by pressing Ctrl+Space. This pastes and 
     selects the completion considered most suitable. Succeeding invocations 
     through Ctrl+Space cyclically browse through all the completions found 
     in a "most-suitable-one-first" order. Alternatively, you may want to cycle 
     through the completions in reverse order, pressing Alt-Space. Finally, 
     Shift-Space will not cycle through the same set of completions, but rather 
     add the current completion to the typed in fragment and start another 
     completion run. 

        E.g. if you start typing in Sm, the first invocation would complete 
     this fragment to Smalltalk, the second to SmallInteger, the third to 
     SmalltalkCompiler, and so on. How many completions are found in a new 
     invocation is displayed in the System Transcript. Completions are 
     considered most suitable according to the following priorities: 

        1.  If suitable completions can be found in the currently edited 
            text, those are considered most suitable. They are called "local 
            completions". 

        2.  Afterwards, all the names known to your system will be searched. 
            The matching names are called "global completions". 

        3.  The entries in the two categories of completions mentioned, are 
            both sorted by length separately: Shorter completions are considered 
            more suitable than longer ones.