There is a variety of custom options available for sketching, preference, or performance in the Sketching Aid menu.
Sketching Aid Panel
To get to Sketching Aid:
1. Press the blue Menu button
2. Go to Settings
3. Select Sketching Aid
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A. Mirror: Activate the World mirror for symmetrical drawing
B. Vertical Lock: Keep sketch always up
C. Home Orientation: Reset your perspective
D. Find My Sketch: Zoom all extents in the space
E. Grid: Activates 3D grid in the space
F: Review Mode: Disables creation controls and locks to 100% scale
G. Mirror Style: Show different mirror styles when the mirror is on
H. Smart Move: Allow linear or rotational grab interaction. Check here for more information
I. Surface Contours: Show isoparm on surfaces
J. World Axis: Show the XYZ axis in the centre of the scene
K. Stage Floor: Create a square/circular floor automatically from the centre of the scene
L. Grid Density: Manipulate the density of the 3D grid