COMMAND NAME:

    VARIABLE


USAGE:

        VARIABLE   REAL     <REAL_NAME>
        VARIABLE   STRING   <STRING_NAME>
        VARIABLE   DISPOSE  <ANY_NAME>

        The VARIABLE command is responsible for the creation and
deletion of variables.  Two types of variables are currently
supported - REAL numbers and STRINGs.

EXAMPLES:

        VARIABLE REAL temp
        create a real number variable named "TEMP"

        VARIABLE DISPOSE temp
        delete the variable named "TEMP"

        VARIABLE STRING temp
        create a string variable named "TEMP"

        $TEMP = "nand" + "_2"
        assign the string variable "TEMP" to have the value "nand_2"

ADDITIONAL INFORMATION:

        See the documentation of the User Interface Command Language for more
information on variable assignment and usage.

        The following variables are system variables.  They are
read-only and cannot be assigned to or disposed of:

        SX1  = the X ordinate of the first point of the last stroke entered
        SY1  = the Y ordinate of the first point of the last stroke entered

        SXN  = the X ordinate of the last point of the last stroke entered
        SYN  = the Y ordinate of the last point of the last stroke entered

        SXLL = the X ordinate of the lower left corner of the
bounding box the last stroke entered
        SYLL = the Y ordinate of the lower left corner of the
bounding box the last stroke entered

        SXUR = the X ordinate of the upper right corner of the
bounding box the last stroke entered
        SYUR = the Y ordinate of the upper right corner of the
bounding box the last stroke entered

