I'm using L3, so I don't know if this is reportable in L5 or not, but last time I checked, reporting typos in notes isn't possible. Anyway, this is a very common note in NASB95...
A star (*) is used to mark verbs that are historical presents in the Greek which have been translated with an English past tense in order to conform to modern usage. The translators recognized that in some contexts the present tense seems more unexpected and unjustified to the English reader than a past tense would have been. But Greek authors frequently used the present tense for the sake of heightened vividness, thereby transporting their readers in imagination to the actual scene at the time of occurence. However, the translators felt that it would be wise to change these historical presents to English past tenses.
The bolded word "occurrence" is misspelled. Been that way for quite some time--it should be corrected.