Code39, also known as 3 of 9 code, USD-3 and LOGMARS, is one of the most widely used bar code symbologies. LOGMARS stands for Logistics Applications of Automated Marking and Reading Symbols. It is a variation of code 39 defined in Military Standard MIL-STD-1189B.

Code 39 accepts 43 valid input characters: 26 uppercase alphas, 10 digits and hyphen(-), period(.), space, dollar sign($), slash(/), plus(+) and percent (%).

Normally, a checksum digit is not required. But in applications that require high accuracy, a modulo 43 checksum character is appended.

With Barcodesoft Code39 Font, it is quite simple to encode code 39 bar codes. Just bracket whatever you want to encode with asterisks, then apply one of the following fonts. Bar code will appear.

There are 14 fonts contained in the package as listed below, marked by different trailing indicators. The fonts are available in both true type and PostScript formats.

Aspect Ratio	With Human Readable	Without Human Readable
XXS	Code39XXSHr	Code39XXS
XS	Code39XSHr	Code39XS
S	Code39SHr	Code39S
M	Code39MHr	Code39M
L	Code39LHr	Code39L
XL	Code39XLHr	Code39XL
XXL	Code39XXLHr	Code39XXL