Uniliteral Hieroglyphs - they connected to the equivalent sounding letter on the keyboard, in the cases of H,h and X,x all make a similar sound with some variation. If there are alternate signs available they are included as the capitalised versions. Note this cannot be used for transliteration purposes (for example, 'j' is not a leaf, but a snake as it is the closest to making a 'j' sound)
The concept for this font is quite interesting. By drawing two hash marks, giving one dots in the middle then drawing two x's and drawing dots in those aswell, you can assign one each a letter. The system for numbers is made up by me, inspired using roman numerals but not exactly.