for example, if you want to copy the title, you can automatically copy it by pressing the title directly.
if you want to copy the first file, you can automatically copy it by pressing the first paragraph directly.
or press the space for a long time, and then you can cover each paragraph with a gray shadow, and then click on the gray block to automatically copy the paragraph.
it is not convenient for bigbang to take so many steps.
what knowledge do I need to make such an APP myself?