validating http://www.dotuscomus.com/svg/SCD_ep2.svg
cannot open http://www.dotuscomus.com/svg/SCD_ep2.svg
elements not used:
svg g defs desc title metadata symbol use switch image style path rect circle line ellipse polyline polygon text tspan tref textPath altGlyph altGlyphDef altGlyphItem glyphRef marker color-profile linearGradient radialGradient stop pattern clipPath mask filter feBlend feColorMatrix feComponentTransfer feComposite feConvolveMatrix feDiffuseLighting feDisplacementMap feFlood feGaussianBlur feImage feMerge feMergeNode feMorphology feOffset feSpecularLighting feTile feTurbulence feDistantLight fePointLight feSpotLight feFuncR feFuncG feFuncB feFuncA cursor a view script animate set animateMotion animateColor animateTransform mpath font font-face glyph missing-glyph hkern vkern font-face-src font-face-uri font-face-format font-face-name definition-src foreignObject
attributes not used:
accent-height accumulate additive alignment-baseline alphabetic amplitude arabic-form ascent attributeName attributeType azimuth baseFrequency baseline-shift baseProfile bbox begin bias by calcMode cap-height class clip clip-path clip-rule clipPathUnits color color-interpolation color-interpolation-filters color-profile color-rendering contentScriptType contentStyleType cursor cx cy d descent diffuseConstant direction display divisor dominant-baseline dur dx dy edgeMode elevation end exponent externalResourcesRequired fill fill-opacity fill-rule filter filterRes filterUnits flood-color flood-opacity font-family font-size font-size-adjust font-stretch font-style font-variant font-weight format from fx fy g1 g2 glyph-name glyph-orientation-horizontal glyph-orientation-vertical glyphRef gradientTransform gradientUnits hanging height horiz-adv-x horiz-origin-x horiz-origin-y id ideographic image-rendering in in2 intercept k k1 k2 k3 k4 kernelMatrix kernelUnitLength kerning keyPoints keySplines keyTimes lang lengthAdjust letter-spacing lighting-color limitingConeAngle local marker-end marker-mid marker-start markerHeight markerUnits markerWidth mask maskContentUnits maskUnits mathematical max media method min mode name numOctaves offset onabort onactivate onbegin onclick onend onerror onfocusin onfocusout onload onmousedown onmousemove onmouseout onmouseover onmouseup onrepeat onresize onscroll onunload onzoom opacity operator order orient orientation origin overflow overline-position overline-thickness panose-1 path pathLength patternContentUnits patternTransform patternUnits pointer-events points pointsAtX pointsAtY pointsAtZ preserveAlpha preserveAspectRatio primitiveUnits r radius refX refY rendering-intent repeatCount repeatDur requiredExtensions requiredFeatures restart result rotate rx ry scale seed shape-rendering slope spacing specularConstant specularExponent spreadMethod startOffset stdDeviation stemh stemv stitchTiles stop-color stop-opacity strikethrough-position strikethrough-thickness string stroke stroke-dasharray stroke-dashoffset stroke-linecap stroke-linejoin stroke-miterlimit stroke-opacity stroke-width style surfaceScale systemLanguage tableValues target targetX targetY text-anchor text-decoration text-rendering textLength title to transform type u1 u2 underline-position underline-thickness unicode unicode-bidi unicode-range units-per-em v-alphabetic v-hanging v-ideographic v-mathematical values version vert-adv-y vert-origin-x vert-origin-y viewBox viewTarget visibility width widths word-spacing writing-mode x x-height x1 x2 xChannelSelector xlink:actuate xlink:arcrole xlink:href xlink:role xlink:show xlink:title xlink:type xml:base xml:lang xml:space y y1 y2 yChannelSelector z zoomAndPan
your SVG?