4. The non-transitory computer-readable storage medium of claim 2 , the program causing the computer to function as the expanded-form-inputting device that inputs the expanded form selected from among the displayed expanded forms at the position, in the designated reference, of the acronym serving as the basis of the display of the expanded forms.
2. The non-transitory computer-readable storage medium of claim 1 , the program causing the computer to function as: an expanded-display device that displays the expanded form corresponding to the acronym; the acronym-extracting device that extracts the acronym from a designated reference; and the expanded-display device that displays the expanded form correlated in the acronym list with the acronym extracted from the designated reference along with a degree of accuracy based on the frequency; the degree of accuracy being a value correlated with the acronym and the expanded form in the acronym list.