# `hmtx`: Horizontal Metrics Table

class fontTools.ttLib.tables._h_m_t_x.table__h_m_t_x(tag=None)
  advanceName = 'width'
  compile(ttFont)
  decompile(data, ttFont)
  dependencies = []
  fromXML(name, attrs, content, ttFont)
  headerTag = 'hhea'
  longMetricFormat = 'Hh'
  merge(m, tables)
  mergeMap = {'metrics': <function sumDicts>, 'tableTag': <function equal>}
  numberOfMetricsName = 'numberOfHMetrics'
  sideBearingName = 'lsb'
  subset_glyphs(s)
  toXML(writer, ttFont)