Logical operators AND, OR in batch

There is no method to combine operators in windows BATCH command shell.
But we can easily emulate it!

For AND operator use next snippet:

if %var% GEQ 1 (
    if %var% LEQ 10 (
        // do...

For OR operator we have to use additional variable:

set result=false

if %var% LEQ 0 set result=true
if %var% GEQ 10 set result=true

if "%result%" EQU "true" (
   // do...

Thanx to http://stackoverflow.com/a/2143396