The navigation section of your survey contains all of the buttons that allow your respondents to progress through your survey. By default, this will only contain a next ( or finish ) and back button. You can enable a survey reset button and a save & exit button in the survey settings.
<div class="navigationWrapper">
<div class="surveyButtonsContainer">
<span id="_responseView__pageView_Layout___previousZone"><input type="submit" name="_responseView$_pageView$Layout_$_previousZone$_prevBtn" value="Back" onclick="return false;" id="_responseView__pageView_Layout___previousZone__prevBtn" class="surveyFooterButton workflowAjaxPostAction" data-action="back"></span>
<span id="_responseView__pageView_Layout___saveZone"><input type="submit" name="_responseView$_pageView$Layout_$_saveZone$_saveBtn" value="Save And Exit" onclick="return false;" id="_responseView__pageView_Layout___saveZone__saveBtn" class="surveyFooterButton workflowAjaxPostAction" data-action="save"></span>
<span id="_responseView__pageView_Layout___resetZone"><input type="button" name="_responseView$_pageView$Layout_$_resetZone$_resetBtn" value="Form Reset" onclick="javascript:void(0);" id="_responseView__pageView_Layout___resetZone__resetBtn" class="surveyFooterButton reset-form-button"></span>
<span id="_responseView__pageView_Layout___nextZone"><input type="submit" name="_responseView$_pageView$Layout_$_nextZone$_nextBtn" value="Next" onclick="return false;WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("_responseView$_pageView$Layout_$_nextZone$_nextBtn", "", true, "", "", false, false))" id="_responseView__pageView_Layout___nextZone__nextBtn" class="surveyFooterButton workflowAjaxPostAction" data-action="next"></span>
<div class="clear"></div>
</div>
</div>