Yes..Aperture is the enswer...
you can see also..
APBOX.....to disply or not the aperture
DSETTINGS....display osnap dialog box.
AUTOSNAP:Controls AutoSnap marker, tooltip, and magnet. Also turns on polar and object snap tracking, and controls the display of polar and object snap tracking tooltips. The system variable value is the sum of the following bit values:
0 Turns off the AutoSnap marker, tooltips, and magnet. Also turns off polar tracking, object snap tracking, and tooltips for polar and object snap tracking
1 Turns on the AutoSnap marker
2 Turns on the AutoSnap tooltips
4 Turns on the AutoSnap magnet
8 Turns on polar tracking
16 Turns on object snap tracking
32 Turns on tooltips for polar tracking and object snap tracking
SNAPTYPESets the type of snap for the current viewport.
0 Grid, or standard snap.
1 PolarSnap. Snaps along polar angle increments. Use PolarSnap with polar and object snap tracking.
SNAPSpecify snap spacing or [ON/OFF/Aspect/Rotate/Style/Type] <current>: Specify a distance, enter an option, or press ENTER
OSMODESets running Object Snap modes using the following bitcodes:
0 NONe
1 ENDpoint
2 MIDpoint
4 CENter
8 NODe
16 QUAdrant
32 INTersection
64 INSertion
128 PERpendicular
256 TANgent
512 NEArest
1024 QUIck
2048 APParent Intersection
4096 EXTension
8192 PARallel
Also, all theses commant can be transparent and be affected by the apperture box.
You can also play with the CURSORSIZE and APERTURE.