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creo9 Drawing Setup option documentation for: DIM_TOL_LEAD_TRAIL_ZEROS            

(Also MBD)

dim_tol_lead_trail_zeros

Controls the appearance of leading and trailing zeroes of the dimension tolerance values that appear in any tolerance mode other than the limits and nominal format. This does not affect the appearance of angular dimension tolerance values.
Default and Available Settings:
same_as_lead_trail_zeros* - The appearance of leading and trailing zeroes of the dimension tolerance values is same as that of dimension values set by the Detail option lead_trail_zeros.
by_model_units - The leading and trailing zeroes of the dimension tolerance values appear according to the units of the model. If the model has English units, the leading zero does not appear and trailing zeroes are added according to the number of decimal places you have set for the dimension value. If the model has Metric units, the leading zero appears and trailing zeroes do not appear.
trail_only - Regardless of the units of the model, trailing zeroes appear, but the leading zero does not appear.
lead_only - Regardless of the units of the model, only the leading zero appears, while the trailing zeroes do not appear.
both - Regardless of the units of the model, both the leading zero and trailing zeroes appear.
by_model_units [by_secondary_units] - Primary display of the dimension tolerance values is based upon model units and secondary display is based upon the secondary units.
by_model_units [trail_only(english)] - Primary display of the dimension tolerance values is based upon model units. Secondary units do not display a leading zero and trailing zeros are displayed as specified while inserting the dimension tolerance.
by_model_units [lead_only(metric)] - Primary display of dimension tolerance values is based upon model units. Secondary units display a single, leading zero and trailing zeros are not displayed.
by_model_units [both] - Primary display of dimension tolerance values is based upon model units. Secondary units display a single, leading zero and trailing zeros are displayed as specified while inserting the dimension tolerance.
trail_only [lead_only] - Primary units do not display a leading zero and trailing zeros are displayed as entered. Secondary units display a single, leading zero and trailing zeros are not displayed.
trail_only(english) [lead_only(metric)] - Primary units do not display a leading zero and trailing zeros are displayed as entered. Secondary units display a single, leading zero and trailing zeros are not displayed.
trail_only(english) [trail_only(english)] - Both primary units and secondary units do not display a leading zero. Both display trailing zeros as specified while inserting the dimension tolerance.
trail_only(english) [both] - Primary units do not display a leading zero and trailing zeros are displayed as entered. Secondary units display a single, leading zero and trailing zeros are displayed as specified while inserting the dimension tolerance.
lead_only(metric) [trail_only(english)] - Primary units display a single, leading zero and trailing zeros are not displayed. Secondary units do not display a leading zero and trailing zeros are displayed as specified while inserting the dimension tolerance.
lead_only(metric) [lead_only(metric)] - Both primary and secondary units display a single, leading zero and trailing zeros are not displayed.
lead_only(metric) [both] - Primary units display a single, leading zero and trailing zeros are not displayed. Secondary units display a single, leading zero and trailing zeros are displayed as specified while inserting the dimension tolerance.
both [both] - Both primary and secondary unit display a single, leading zero and trailing zeros are displayed as specified while inserting the dimension tolerance.
both [trail_only(english)] - Primary units display a single, leading zero and trailing zeros are displayed as entered by you. Secondary units do not display a leading zero and trailing zeros are displayed as specified while inserting the dimension tolerance.
both [lead_only(metric)] - Primary units display a single, leading zero and trailing zeros are displayed as entered by you. Secondary units display a single, leading zero and trailing zeros are not displayed.
* 
The display for the above settings is valid when the dual_dimensioning Detail option is set to primary[secondary] or secondary[primary].