Another new feature in AutoCAD LT 2010 that falls into the small-but-potentially-very-significant category is the ability to use sub-units in dimension styles. This means that you can show different magnitudes of dimensions with different units.
(This is not the same thing as Alternate Units, which is designed to show two different families of measurement at the same time, i.e. inches and millimeters. More on those another time.)
Check the box, and the Sub-units options become available. Now, I can enter a sub-units factor of 100 (the conversion factor between meters and centimeters) and a suffix of "cm" (with or without a space). This helps to distinguish between the regular dimensions and sub-unit ones.