@color: blue; something @{color}, world { color: blue; } .div { @color: red; (3434) { height: 100px; } cool @{color} { height: 4000px; } } .heck(@a) { color: @a+10 } .spanX (@index) when (@index > 0) { .span@{index} { .heck(@index) } .spanX(@index - 1); } .spanX (0) {} .spanX (5);