How You Can Use the Mode-Bias Attributes
To enable you to change the bias of a field when the frame is in a specific mode, OpenROAD provides the following set of attributes for every field and menu item:
UpdateBias
Sets the bias for the field when the frame is in Update mode
QueryBias
Sets the bias for the field when the frame is in Query mode
ReadBias
Sets the bias for the field when the frame is in Read mode
User1Bias
Sets the bias for the field when the frame is in User1 mode
User2Bias
Sets the bias for the field when the frame is in User2 mode
User3Bias
Sets the bias for the field when the frame is in User3 mode
AllBias
Sets the bias for the field item for all six modes
These attributes let you override the field's initial bias settings specified by using the Frame Editor's Bias menu or using the system defaults. The new setting takes effect the next time you change the frame to the specified mode (immediately if the frame is already in that mode).