\myacronym{IR}{IR}{intermediate representation}
\myacronym{ISR}{ISR}{interrupt service routine}
\myacronym{LEAN}{LEAN}{language of East-Anglia and Nijmegen}
-\myacronym[prefixfirst={a\ },prefix={an\ }]{LED}{LED}{light-emitting diode}
+\myacronym[category=noexpand,prefixfirst={a\ },prefix={an\ }]{LED}{LED}{light-emitting diode}
\myacronym{OLED}{OLED}{organic \glsxtrlong{LED}}
\myacronym[category=noexpand]{OS}{OS}{operating system}
\myacronym{OTA}{OTA}{over-the-air}