Code words are typically used for reasons of reliability, clarity, brevity, or secrecy. This allowed omitting spaces between tokens for brevity or including spaces within identifiers for clarity. Some commands had no abbreviated form, either due to brevity or ambiguity with other commands. Nani's speeches were fascinating for their brevity and clarity. Certain characters were also combined together for the sake of brevity. When the choice of formula 131 is arbitrary, it is omitted from expressions for brevity. Pixel values that have a zero count are excluded for the sake of brevity. The fruit thus symbolizes the brevity and futility of life. He repeatedly refers to the brevity of life and the fleeting nature of time. His writing style was of extreme brevity and condensed expression. As with e-mail, informality and brevity have become an accepted part of text messaging. The brevity and apparent lack of formal structure in the Op. Owing to its brevity and coherence, it has become widely known. The song juxtaposes Zantzinger's wealth and connections with the brevity of that sentence. Criticisms were aimed at the brevity of missions and lack of replay value.