creo4 Drawing Setup option documentation for: DEFAULT_DETAIL_VIEW_NAME_STYLE 
default_detail_view_name_style
Controls the manner in which default name is assigned to a new detailed view.
letter* - Assigns the next available Latin
alphabet letter to the new detailed view.
roman - Assigns the next available uppercase Roman numeral to the new detailed
view.
rks_Number" style="width: 18pt"> std_ansi_imp - Does not display hidden thread lines when you select No Hidden Line from the Display Style list in the Environment dialog box that opens when you click Tools > Environment. When you select Hidden Line, thread lines are displayed as leader lines (yellow).
std_ansi_imp_assy - Displays threaded holes in accordance with the ANSI
standard.
std_iso - Displays threads in cross-sectional assembly drawings in accordance
with the ISO 6410 standard.
std_iso_imp - Does not display hidden thread lines when you select No Hidden Line from the Display Style list in the Environment dialog box that opens when you click Tools > Environment. When you select Hidden Line, thread lines are displayed as leader lines (yellow).
std_iso_imp_assy - Displays threads in cross-sectional assembly drawings in
accordance with the ISO 6410 standard.
std_jis - Displays threads in the top and side views of drawings in accordance
with the JIS standard.
|  The std_iso and std_ansi values are valid for drawings created before Pro/ENGINEER Release 15.0. |