Positions ~FW/~FP are in thousandths of an inch; text at rotation 0 runs along the label length and ~FW grows upwards. Click a field to find it in the code. Fonts are free lookalikes (TeX Gyre Heros, Archivo, Saira, Cousine), so text widths may differ slightly from the print. Resident logos (~FG) show as a dashed box; sign in to upload your own BMPs. Images sent inside the job (~FM with ~I in PCX) are only read when you open the file. Barcode fields (~FB) are drawn as Code 39; other symbologies are not implemented yet, so check the bars against a print before relying on them.