.\" /*
.\"  * Revision Control Information
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.\"  * $Source: /vol/opua/opua2/sis/sis-1.1/common/src/sis/sis_lib/help/RCS/add_inverter.1,v $
.\"  * $Author: sis $
.\"  * $Revision: 1.2 $
.\"  * $Date: 1992/05/06 19:04:01 $
.\"  *
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.XX
add_inverter
.PP
Add inverters into the network wherever needed to make each
signal (including the primary inputs) used only in its negative form.
After this command, every literal in a node is in the negative form.
This is the appropriate starting point for the technology mapping step.
