message: commented out "notesMaster" to avoid issues with current/older versions of PowerPoint
diff: @@ -1717,20 +1717,22 @@ export function makeXmlPresentation(slides: ISlide[], pptLayout: ILayout, rtlMod
  (rtlMode ? 'rtl="1" ' : '') +
  'saveSubsetFonts="1" autoCompressPictures="0">'
  - // IMPORTANT: Steps 1-2-3 must be in this order or PPT will give corruption message on open!
  - // STEP 1: Add slide master
  + // STEP 1: Add slide master (SPEC: tag 1 under <presentation>)
  strXml += '<p:sldMasterIdLst><p:sldMasterId id="2147483648" r:id="rId1"/></p:sldMasterIdLst>'
  - // STEP 2: Add all Slides
  + // STEP 2: Add Notes Master (SPEC: tag 2 under <presentation>)
  + // (NOTE: length+2 is from `presentation.xml.rels` func (since we have to match this rId, we just use same logic))
  + // IMPORTANT: In this order (mtches PPT2019) PPT will give corruption message on open!
  + // (20200115): (Swap this and STEP 3 is okay - WTF) Seems to work fine without this, so leaving out for now
  + //strXml += `<p:notesMasterIdLst><p:notesMasterId r:id="rId${slides.length + 2}"/></p:notesMasterIdLst>`
  +
  + // STEP 3: Add all Slides (SPEC: tag 3 under <presentation>)
  strXml += '<p:sldIdLst>'
  for (let idx = 0; idx < slides.length; idx++) {
  strXml += '<p:sldId id="' + (idx + 256) + '" r:id="rId' + (idx + 2) + '"/>'
  }
  strXml += '</p:sldIdLst>'
  - // STEP 3: Add Notes Master (NOTE: length+2 is from `presentation.xml.rels` func (since we have to match this rId, we just use same logic))
  - strXml += '<p:notesMasterIdLst><p:notesMasterId r:id="rId' + (slides.length + 2) + '"/></p:notesMasterIdLst>'
  -
  // STEP 4: Build SLIDE text styles
  strXml +=
  '<p:sldSz cx="' +
  @@ -1743,7 +1745,7 @@ export function makeXmlPresentation(slides: ISlide[], pptLayout: ILayout, rtlMod
  '" cy="' +
  pptLayout.width +
  '"/>' +
  - '<p:defaultTextStyle>' //+'<a:defPPr><a:defRPr lang="en-US"/></a:defPPr>'
  + '<p:defaultTextStyle>'
  for (let idy = 1; idy < 10; idy++) {
  strXml +=
  '<a:lvl' +
  @@ -1760,6 +1762,7 @@ export function makeXmlPresentation(slides: ISlide[], pptLayout: ILayout, rtlMod
  'pPr>'
  }
  strXml += '</p:defaultTextStyle>'
  + //strXml += '<p:extLst><p:ext uri="{EFAFB233-063F-42B5-8137-9DF3F51BA10A}"><p15:sldGuideLst xmlns:p15="http://schemas.microsoft.com/office/powerpoint/2012/main"/></p:ext></p:extLst>'
  strXml += '</p:presentation>'
  return strXml
  