A guide frame for an earth drilling apparatus includes a support plate for holding the drive unit and a handle frame having handle sections for holding and guiding the earth drilling apparatus. Maize plants or germplasm that have been identified, selected, andor produced by any of the methods of the presently disclosed subject matter are also provided. The time and channel are provided to a program guide to access a title associated with the particular program. The indicating element is displaceable in response to contact by the cartridge from a first position which may in one embodiment correspond to an absence of a cartridge loaded in the chamber, to a second position which may in one embodiment correspond to a presence of a cartridge loaded in the chamber.