This is METAFONT, Version 2.71828 (Web2C 7.5.6) (base=mf 2012.4.18)  8 JUL 2015 10:20
**singletrack.f90 singletrack.f90_save
(singletrack.f90
>> program.resonantextraction.use.bmad.use.beam_mod.implicit.none.type
! Isolated expression.
<to be read again> 
                   (
l.7       type (
                lat_struct), target :: lat
? x