libqwt5-doc 5.2.3-1 (s390x binary) in ubuntu xenial

 The Qwt library contains Qt GUI Components and utility classes which
 are primarily useful for programs with a technical background. Most of
 these widgets are used to control or display values, arrays, or ranges
 of type double.
 .
 This package contains the Qwt library documentation and programming examples
 for developers. The documentation is generated for Qt4.