input: [1] int [2] The starting position of the feature in the chromosome. The first base in a chromosome is numbered 0. [0] 
output: chromStart
options: f i e l d
options: c h r o m
options: c h r o m S t a r t
options: c h r o m E n d
options: n a m e
options: s c o r e
options: s t r a n d