1. A method, comprising: receiving a textual data set comprising a plurality of character codes, each respective character code comprising a code value indicating at least one respective text character to be visually rendered; and determining, based on the textual data set, a drawing instruction set comprising, for each respective code value within the plurality of character codes, a respective at least one drawing instruction in a rendering language to draw at least part of a glyph of the respective code value, wherein each respective at least one drawing instruction excludes an indication of a correspondence with the respective character code, wherein each respective at least one drawing instruction for a specified text character excludes instructions to repeat drawing instructions specified for other instances of the specified text character.