What does 'present tense' indicate in grammar?

Present tense in grammar is used to express an action that is currently occurring or regularly performed. This means it describes ongoing actions, habitual actions, or facts that are true at the moment of speaking. For example, when you say, "She runs every morning," you are indicating a regular action that happens in the present time. This form of tense is fundamental for conveying immediate thoughts or actions, making it clear to the reader or listener that the event is taking place in the here and now. The concept of present tense is crucial for effective communication in both writing and speaking, as it helps set the timeframe of the actions being discussed.