The ground sign designating the shopping center, industrial park or office park shall not contain more than 10 items of information. A syllable of a word, an initial, a logo, an abbreviation, a symbol or a geometric shape shall be counted as an item of information, except for the following:
[1] The name of the center or park shall not be counted as more than four items of information.
[2] Letters three inches or less in height do not count as items of information.