<group>
sample=../sample.wav
pitch_keycenter=40
// <region> line comment
    //<region> line comment with spaces at the beginning
<region> lokey=60 hikey=70 // <region> line comment with opcodes at the beginning
<region> lokey=23 /* lokey=45 */ hikey=42 /* hikey=58*/ // block in line
/* block multiline
<region>
<region>
    */ <region> lokey=42 /* new block after block */ hikey=23 /*
<region>   some more 
    */
