Normalize the UV extents by geometric extents – 2D parts are a visualization of ACIS facets. Different types of facets have different scale in ACIS. For example, periodic facets (sphere, cone) are limited in size from -Pi (3.14) to +Pi (3.14). If this option is off, 2D parts have exactly the dimensions that are given to them by ACIS. If it is on, then the 2D part is changed in size in accordance with their geometric dimensions.
Off
On
You can find any tool by the Menu Structure HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Menu+Structure
You can find the menu location of any tool by name HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Tools+Mapped+to+Menus
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