twbs--bootstrap/less/utilities.less

//
// Utility classes
// --------------------------------------------------


// Floats
// -------------------------

.clear {
  .clearfix();
}
.pull-right {
  float: right;
}
.pull-left {
  float: left;
}


// Toggling content
// -------------------------

.hide {
  display: none;
}
.show {
  display: block;
}
.invisible {
  visibility: hidden;
}
.text-hide {
  .hide-text();
}


// For Affix plugin
// -------------------------

.affix {
  position: fixed;
}


// Forms
// -------------------------

.control-block-level {
  .input-block-level();
}