diff --git a/.gitignore b/.gitignore
index af431f5..c562b49 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,5 @@ Covers
 *.synctex.gz
 *.toc
 *.dvi
+*.odt
+
diff --git a/ppme.svg b/ppme.svg
new file mode 100644
index 0000000..8ec3aba
--- /dev/null
+++ b/ppme.svg
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="612pt" height="792pt" viewBox="0 0 612 792" version="1.1">
+<g id="surface1">
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,60.351563%,87.889099%);fill-opacity:1;" d="M 307.371094 355.320313 C 316.664063 355.320313 316.496094 355.320313 325.785156 355.320313 C 338.628906 355.320313 347.246094 359.503906 344.882813 374.5 C 341.746094 394.449219 324.304688 394.523438 320.492188 394.523438 L 318.46875 394.523438 C 316.566406 394.472656 315.261719 395.765625 314.953125 397.738281 L 312.53125 413.472656 C 311.976563 415.546875 311.046875 416.3125 308.800781 416.3125 L 296.816406 416.269531 C 295.542969 416.269531 294.738281 415.144531 294.914063 414.023438 L 303.8125 358.136719 C 303.992188 356.988281 304.988281 355.320313 307.371094 355.320313 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,17.259216%,54.101563%);fill-opacity:1;" d="M 292.601563 337.878906 C 301.890625 337.878906 307.910156 337.878906 317.203125 337.878906 C 330.042969 337.878906 341.152344 342.65625 338.730469 358.03125 C 335.683594 377.433594 322.042969 381.394531 310.382813 381.441406 L 303.199219 381.441406 C 301.296875 381.390625 299.871094 382.761719 299.5625 384.734375 L 295.976563 407.519531 L 280.78125 407.519531 C 279.609375 407.519531 278.699219 406.394531 278.875 405.273438 L 289.039063 340.695313 C 289.222656 339.546875 290.21875 337.878906 292.601563 337.878906 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,12.156677%,41.967773%);fill-opacity:1;" d="M 325.785156 355.320313 L 307.371094 355.320313 C 304.988281 355.320313 303.992188 356.988281 303.8125 358.136719 L 299.640625 384.328125 C 300.070313 382.574219 301.429688 381.394531 303.199219 381.441406 L 310.382813 381.441406 C 322.042969 381.394531 335.683594 377.433594 338.730469 358.03125 C 338.746094 357.945313 338.757813 357.859375 338.769531 357.773438 C 335.414063 355.996094 330.941406 355.320313 325.785156 355.320313 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,60.351563%,87.889099%);fill-opacity:1;" d="M 298.078125 430.878906 C 297.570313 434.230469 295.007813 434.230469 292.53125 434.230469 L 291.125 434.230469 L 292.113281 427.972656 C 292.175781 427.59375 292.496094 427.316406 292.882813 427.316406 L 293.527344 427.316406 C 295.210938 427.316406 296.804688 427.316406 297.628906 428.277344 C 298.117188 428.851563 298.265625 429.703125 298.078125 430.878906 Z M 297.003906 422.136719 L 287.664063 422.136719 C 287.027344 422.136719 286.480469 422.601563 286.382813 423.230469 L 282.605469 447.171875 C 282.53125 447.644531 282.898438 448.070313 283.371094 448.070313 L 288.164063 448.070313 C 288.609375 448.070313 288.992188 447.746094 289.0625 447.304688 L 290.132813 440.515625 C 290.230469 439.886719 290.773438 439.421875 291.414063 439.421875 L 294.367188 439.421875 C 300.519531 439.421875 304.066406 436.445313 304.996094 430.546875 C 305.414063 427.964844 305.011719 425.9375 303.804688 424.519531 C 302.476563 422.960938 300.125 422.136719 297.003906 422.136719 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,60.351563%,87.889099%);fill-opacity:1;" d="M 318.675781 439.472656 C 318.246094 442.027344 316.21875 443.742188 313.632813 443.742188 C 312.335938 443.742188 311.296875 443.328125 310.628906 442.539063 C 309.96875 441.753906 309.71875 440.636719 309.929688 439.398438 C 310.332031 436.863281 312.390625 435.09375 314.9375 435.09375 C 316.207031 435.09375 317.238281 435.515625 317.917969 436.308594 C 318.605469 437.113281 318.875 438.238281 318.675781 439.472656 Z M 324.910156 430.773438 L 320.441406 430.773438 C 320.054688 430.773438 319.730469 431.050781 319.675781 431.429688 L 319.476563 432.679688 L 319.164063 432.226563 C 318.195313 430.820313 316.039063 430.351563 313.882813 430.351563 C 308.941406 430.351563 304.722656 434.09375 303.902344 439.34375 C 303.476563 441.960938 304.082031 444.464844 305.566406 446.210938 C 306.933594 447.816406 308.878906 448.484375 311.199219 448.484375 C 315.179688 448.484375 317.386719 445.925781 317.386719 445.925781 L 317.1875 447.167969 C 317.113281 447.644531 317.476563 448.070313 317.957031 448.070313 L 321.980469 448.070313 C 322.617188 448.070313 323.160156 447.605469 323.265625 446.972656 L 325.679688 431.671875 C 325.753906 431.199219 325.386719 430.773438 324.910156 430.773438 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,60.351563%,87.889099%);fill-opacity:1;" d="M 330.179688 422.792969 L 326.347656 447.171875 C 326.273438 447.644531 326.640625 448.070313 327.113281 448.070313 L 330.96875 448.070313 C 331.609375 448.070313 332.148438 447.605469 332.25 446.976563 L 336.027344 423.035156 C 336.035156 423.003906 336.035156 422.96875 336.039063 422.9375 L 336.039063 422.882813 C 336.023438 422.472656 335.6875 422.132813 335.261719 422.132813 L 330.945313 422.132813 C 330.566406 422.136719 330.238281 422.414063 330.179688 422.792969 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,17.259216%,54.101563%);fill-opacity:1;" d="M 231.480469 430.878906 C 230.972656 434.230469 228.410156 434.230469 225.9375 434.230469 L 224.527344 434.230469 L 225.515625 427.972656 C 225.574219 427.59375 225.902344 427.316406 226.285156 427.316406 L 226.929688 427.316406 C 228.617188 427.316406 230.207031 427.316406 231.027344 428.277344 C 231.519531 428.851563 231.667969 429.703125 231.480469 430.878906 Z M 230.40625 422.136719 L 221.066406 422.136719 C 220.429688 422.136719 219.886719 422.601563 219.785156 423.230469 L 216.011719 447.171875 C 215.933594 447.644531 216.300781 448.070313 216.78125 448.070313 L 221.238281 448.070313 C 221.878906 448.070313 222.421875 447.605469 222.519531 446.976563 L 223.539063 440.515625 C 223.636719 439.886719 224.179688 439.421875 224.816406 439.421875 L 227.773438 439.421875 C 233.925781 439.421875 237.472656 436.445313 238.402344 430.546875 C 238.816406 427.964844 238.417969 425.9375 237.210938 424.519531 C 235.882813 422.960938 233.53125 422.136719 230.40625 422.136719 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,17.259216%,54.101563%);fill-opacity:1;" d="M 252.082031 439.472656 C 251.648438 442.027344 249.621094 443.742188 247.039063 443.742188 C 245.738281 443.742188 244.703125 443.328125 244.035156 442.539063 C 243.375 441.753906 243.121094 440.636719 243.335938 439.398438 C 243.734375 436.863281 245.796875 435.09375 248.34375 435.09375 C 249.613281 435.09375 250.644531 435.515625 251.324219 436.308594 C 252.007813 437.113281 252.277344 438.238281 252.082031 439.472656 Z M 258.3125 430.773438 L 253.84375 430.773438 C 253.460938 430.773438 253.132813 431.050781 253.074219 431.429688 L 252.875 432.679688 L 252.5625 432.226563 C 251.59375 430.820313 249.4375 430.351563 247.28125 430.351563 C 242.34375 430.351563 238.121094 434.09375 237.300781 439.34375 C 236.871094 441.960938 237.480469 444.464844 238.964844 446.210938 C 240.328125 447.816406 242.277344 448.484375 244.597656 448.484375 C 248.578125 448.484375 250.785156 445.925781 250.785156 445.925781 L 250.585938 447.167969 C 250.511719 447.644531 250.878906 448.070313 251.355469 448.070313 L 255.382813 448.070313 C 256.019531 448.070313 256.5625 447.605469 256.664063 446.972656 L 259.078125 431.671875 C 259.15625 431.199219 258.789063 430.773438 258.3125 430.773438 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,17.259216%,54.101563%);fill-opacity:1;" d="M 282.125 430.773438 L 277.632813 430.773438 C 277.203125 430.773438 276.800781 430.984375 276.558594 431.34375 L 270.359375 440.46875 L 267.734375 431.699219 C 267.570313 431.148438 267.0625 430.773438 266.488281 430.773438 L 262.074219 430.773438 C 261.539063 430.773438 261.164063 431.296875 261.335938 431.800781 L 266.285156 446.324219 L 261.632813 452.890625 C 261.265625 453.410156 261.636719 454.121094 262.265625 454.121094 L 266.753906 454.121094 C 267.179688 454.121094 267.578125 453.914063 267.820313 453.5625 L 282.765625 431.992188 C 283.121094 431.476563 282.753906 430.773438 282.125 430.773438 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,17.259216%,54.101563%);fill-opacity:1;" d="M 343.40625 448.085938 L 337.644531 448.085938 L 338.9375 442.070313 L 344.703125 442.070313 L 343.40625 448.085938 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,17.259216%,54.101563%);fill-opacity:1;" d="M 371.910156 448.09375 L 366.066406 448.09375 L 369.351563 434.019531 L 363.53125 442.863281 L 359.414063 442.863281 L 357.617188 433.355469 L 354.222656 448.09375 L 348.625 448.09375 L 353.746094 425.867188 L 360.414063 425.867188 L 362.835938 436.710938 L 370.226563 425.867188 L 377.03125 425.867188 L 371.910156 448.09375 "/>
+<path style=" stroke:none;fill-rule:evenodd;fill:rgb(0%,17.259216%,54.101563%);fill-opacity:1;" d="M 386.40625 448.550781 C 380.101563 448.550781 376.382813 445.09375 377.808594 438.910156 C 379.089844 433.34375 383.265625 430.777344 388.964844 430.777344 C 394.304688 430.703125 396.863281 433.472656 395.738281 438.925781 L 395.304688 440.808594 L 383 440.808594 C 382.851563 443.554688 384.9375 444.625 387.695313 444.625 C 389.792969 444.625 392.101563 443.828125 393.863281 442.710938 L 394.507813 442.710938 L 393.511719 447.203125 C 390.992188 448.09375 389.144531 448.550781 386.40625 448.550781 Z M 390.5625 437.492188 C 390.796875 435.402344 389.839844 434.234375 388 434.234375 C 385.828125 434.234375 384.253906 435.464844 383.503906 437.492188 L 390.5625 437.492188 "/>
+</g>
+</svg>