![Quectel EM121R-GL Hardware Design Download Page 14](http://html.mh-extra.com/html/quectel/em121r-gl/em121r-gl_hardware-design_772079014.webp)
LTE-A Module Series
EM121R-GL Hardware Design
EM121R-GL Hardware Design 13 / 80
1.3. Special Mark
Table 1: Special Mark
Mark
Definition
*
When an asterisk (*) is used after a function, feature, interface, pin name, AT command, or
argument, it indicates that the function, feature, interface, pin name, AT command, or
argument is under development and currently not supported, unless otherwise specified.
[
…]
B
rackets ([…]) used after a pin enclosing a range of numbers indicate all pin of the same
type. For example, ANTCTL [0:3] refers to all four ANTCTL pins, ANTCTL0, ANTCTL1,
ANTCTL2, and ANTCTL3.