Terminal, control method therefor, and recording medium in which program for implementing method is recorded

A method for controlling a terminal, comprising:

• under an editing mode for a main content, setting a first trigger region linked to a plurality of additional contents on the main content, switching, for the main content, the editing mode to a viewer mode;
• and
• under the viewer mode, in response to a first user input selecting the first trigger region on the main content, controlling to output a list of a plurality of preview thumbnails, wherein each preview thumbnail in the list corresponds to the respective plurality of additional contents linked to the first trigger region;
• in response to receiving a second user input selecting a first preview thumbnail in the list, controlling to output a first additional content corresponding to the selected first preview thumbnail, on the main content;
• and in response to receiving a third user input selecting a second preview thumbnail in the list, while the first additional content is output on the main content, controlling to stop outputting the first additional content and newly output a second additional content corresponding to the second preview thumbnail selected by the third user input, on the main content.

A non-transitory computer readable recording medium for storing program instructions for controlling a terminal, the program instructions comprising:

• under an editing mode for a main content, setting a first trigger region linked to a plurality of additional contents on the main content, switching, for the main content, the editing mode to a viewer mode;
• and
• under the viewer mode, in response to a first user input selecting the first trigger region on the main content, controlling to output a list of a plurality of preview thumbnails, wherein each preview thumbnail in the list corresponds to the respective plurality of additional contents linked to the first trigger region;
• in response to receiving a second user input selecting a first preview thumbnail in the list, controlling to output a first additional content corresponding to the selected first preview thumbnail, on the main content;
• and in response to receiving a third user input selecting a second preview thumbnail in the list, while the first additional content is output on the main content, controlling to stop outputting the first additional content and newly output a second additional content corresponding to the second preview thumbnail selected by the third user input, on the main content.