Markers have their texts primarily in Filipino, while there are also markers in the English language, especially for markers that were installed during the American occupation. Markers in regional languages such as Cebuano, Ilocano, and Kapampangan, are also available and issued by the NHCP. Markers are found all over the country, and there have been markers installed outside the country. The plaques themselves are permanent signs installed in publicly visible locations on buildings, monuments, or in special locations. There are more than 1,500 markers to date. Most markers are located within Luzon, especially in Metro Manila, which has prompted the NHCP to install more markers in Visayas and Mindanao, for their greater inclusion in the national historical narrative.