Specifications

136 Chapter 8—Device Symbol Editing
 A polygon outlining the symbol, used for highlighting and erasing the
symbol.
 An optional internal circuit definition.
The following sections deal with the creation and maintenance of library
files. Later parts of this chapter deal with editing the symbols themselves.
Creating a New Library
To create a new, empty symbol library file, right-click anywhere in the
Parts palette. In the pop-up menu that appears, select the New Lib com-
mand.
A standard file save box will appear. Enter the desired name for the library
and select a disk directory. The library created and opened automatically
so it appears in the Parts palette. If you wish to have the library opened
automatically at startup when you enter LogicWorks in the future, see
“Specifying Libraries to Open at Startup” on page 249.
Manually Opening a Library
To open any library file on your disk:
 Right-click anywhere in the Parts palette. In the pop-up menu that
appears, select the New Lib command.
In either case, a standard file open box will appear. Locate the desired file
in the usual way. The library will be opened and appear in the Parts palette.
A small amount of memory is occupied by each open library file.
Circuits and Libraries
Whenever select a device symbol from a library and use it in a circuit, all information
needed to display and edit that device is retained with the circuit. (Of course, only one
copy is kept, regardless of how many times you use the same symbol in one circuit.)
No further access to the library itself is required. This is done to ensure that a circuit
file is always a complete entity and that future changes to a library will not inadvert-
ently render an old circuit incorrect..
LW Reference.bk Page 136 Monday, December 15, 2003 5:59 PM