Command
QisLib_SetDBU

QisLib_SetDBU

Function:
	int QisLib_SetDBU(double Grid, double Unit);

Inputs:
	Grid: A floating point value for GDSII/OASIS grid. (Number of database units in a user
	unit)
	Unit: A floating point value for GDSII Units. (Number of database units in a meter)

Return:
	success: 0
	failure: one of the following values :

Errors:
	-1: File open in progress, operation not permitted.

Description:
	- Instructs the QisLib to set the grid (GDSII and OASIS) and units (GDSII) for the
	file to be saved.
	- When this function is executed, the numerical values of all the data remains
	unchanged. Hence the physical size of the data will change.
	- All data will be processed with the new Grid and Unit values.
	- This command will scale up or down all data while drawing.
	- The text data in the output file may be too big or too small relative to the rest
	of the data since text insertion scales are not changed by this function.
	- When the GDSII/OASIS file is saved, these two numbers are save as it is.
	- Since the user units for OASIS files is always a micron, the 'Unit' argument does
	not have any usage for OASIS files. Hence it will be ignored when processing OASIS
	files.
	- This function should not be called when a GDSII/OASIS file is being opened.