[mkgmap-dev] Lower case option & special codes

I don't understand how "lower-case" option works. It is fine when I build a map from an OSM file. But when I want to build a map which contains only pillars (0x660f) in a "mp" format (polish format) all names are written uppercase. Could you give me a clue to correct this ? Is there a way to deal with special codes from mapedit like "~[0x1e]" ? (this code in 8 bits coding shows only the second section of a label). Someone found a solution for roads symbols (~[0x01], ~[0x02], ~[0x03], ~[0x04], ~[0x05] and ~[0x06]). It would be great if we could use ~[0x0c] (first section visible on map), ~[0x0e] (second section visible on map), ~[0x0f] (first part only when over 1km, used before elevation).