message: minor string work
diff: @@ -1703,13 +1703,9 @@ export function makeXmlTheme(): string {
  */
  export function makeXmlPresentation(slides: ISlide[], pptLayout: ILayout, rtlMode: boolean): string {
  let strXml =
  - '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' +
  - CRLF +
  - '<p:presentation xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" ' +
  - 'xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" ' +
  - 'xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" ' +
  - (rtlMode ? 'rtl="1" ' : '') +
  - 'saveSubsetFonts="1" autoCompressPictures="0">'
  + `<?xml version="1.0" encoding="UTF-8" standalone="yes"?>${CRLF}` +
  + `<p:presentation xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" ` +
  + `xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" ${rtlMode ? 'rtl="1"' : ''} saveSubsetFonts="1" autoCompressPictures="0">`
  // STEP 1: Add slide master (SPEC: tag 1 under <presentation>)
  strXml += '<p:sldMasterIdLst><p:sldMasterId id="2147483648" r:id="rId1"/></p:sldMasterIdLst>'
  