interface_build {
    {m.qcalc} 0
    {Creates tables of cell sizes, acreage, and hectares; performs unit conversions}
    {entry init {Initial value:} 0 ""}
    {entry end {End value (for table creation):} 0 ""}
    {entry incr {Increment value (for table creation):} 0 file}
    {entry unit {Units (for unit conversions):} 0 area}
    {checkbox -s {Create table of cell sizes} s}
    {checkbox -a {Create acreage table} -a}
    {checkbox -h {Create hectares table} -h}
    {checkbox -c {Convert value to specified units} -c}
    {checkbox -m {Perform simple math calculation} -m}
}