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Hi everyone i am new to prestashop and i am starting to develop my own module. it will not do much. just allow the user to add a dropdown of 5 preloaded typefaces list. when he chooses one below it he can type a text of max 10 letters and this will be visible above the product image. i 've spend time reading http://doc.prestashop.com/display/PS16/Developer+Guide and i have some questions. if someone can answer them it will be of great help. 1) i cant find anywhere an api. a list of everyhting i can interact with. even searching in google with relative terms produces nothing. doesnt it exist ? 2) should i try to change core files to add a product custom attribute of "typeface" with a drop down list of "typeface" values and then create a custom product template to display it ? or 3) create a module that will handle typeface loading, associate it with a predifined product and when the product is displayed load the typeface list choice from the module ? or 4) display a module when the prefefined product is called using a hook for example or a custom hook ? the questions might sound silly but understand i am just begginng in prestashop... thanks