A body is provided for a portable computational device. The body includes a housing bearing a control panel to control the operation of the portable computational device. The body defines a print media exit slot, and a bay located opposite the exit slot. A print engine is mounted relative to the housing and is configured to receive a print roll cartridge so that the print roll cartridge is received within the bay. The print roll cartridge stores ink and print media. The print engine includes an elongate printhead arranged to print the ink onto the print media. A feed arrangement is configured to feed the print media from the print roll cartridge, in register with the printhead during printing, and out through the exit slot.