prefix characters

基本解釋

When grouping by prefix characters, you must set the Interval to an integer.
儅以前綴字符分組時(shí)，您必須將“間隔”設(shè)置爲(wèi)整數(shù)。
The combined length of message plus prefix can be at most 254 characters. The prefix must not contain a tab character.
發(fā)送消息的長(zhǎng)度（包括前綴）最長(zhǎng)是254個(gè)字符。前綴不能包含任何制表符。
If the names are too long, buy a shorter one. (I once bought xom.nu so my package prefix was only six characters long.)
如果名稱太長(zhǎng)就買個(gè)短些的（我曾經(jīng)買到了 xom.nu 這樣一個(gè)域名，因而我的包前綴就衹有 6 個(gè)字符）。