Compounds of formula wherein Q is a group formula, ; Z is \u2550N\u2014, formula or \u2550C\u2014; n is 0, 1, 2 or 3; R3 or R4 are each independently of the other hydrogen, alogen, \u2014CN, C1-C4alkyl or C1-C4alkoxyl; or R3 and R4 together are C2-C5alkylene; and the agrochemically acceptable salts and all stereoisomers and tautomers of the compounds of formula are suitable for use as herbicides. In certain embodiments, the amorphous carbon layer includes at least about 35% sp3 carbon-carbon bonds, more preferably at least about 70%, and most preferably at least about 80% of the sp3 carbon-carbon bonds. In this way, the user’s media library may be \u201cmined\u201d for information that will aid in creating searches for data that the user may be interested in, but may not necessarily know how to search for or may not necessarily know exists. A stashed palette group is generated in response to the user input.