Article Introduction

PHA+PHN0cm9uZz5XZWxjb21lIHRvIFkgQ29tYmluYXRvciBTdGFydHVwIENsYXNzISZuYnNwOzwvc3Ryb25nPjwvcD48cD7CoDwvcD48cD5XZSBwYXJ0bmVyZWQgd2l0aCA8YSByZWw9Im5vZm9sbG93IiB0YXJnZXQ9Il9ibGFuayIgaHJlZj0iaHR0cHM6Ly93d3cueWNvbWJpbmF0b3IuY29tIj5ZIENvbWJpbmF0b3I8L2E+IHRvIGludHJvZHVjZSBvbmUgb2YgdGhlaXIgbW9zdCBpbXBvcnRhbnQgY291cnNlcyB0byBvdXIgY29tbXVuaXR5LiBEdXJpbmcgdGhpcyBjb3Vyc2UgeW91IHdpbGwgbGVhcm4gaG93IHlvdSBjYW4mbmJzcDtjcmVhdGUgeW91ciBvd24gc3RhcnR1cCBhbmQgd2Ugd2lsbCZuYnNwO3Nob3cgeW91IHRoZSBiZXN0IHdheSB0byBkbyBpdC48YnIgLz48YnIgLz5BdCB0aGUgZW5kIG9mIHRoaXMgY291cnNlLCZuYnNwO3lvdSB3aWxsIGtub3c6PGJyIC8+LSBXaHkgaXMgaW1wb3J0YW50IHRvIGJlIHBhcnQgb2YgdGhlIHN0YXJ0dXAgZWNvc3lzdGVtLDxiciAvPi0gSG93IHRvIG1hbmFnZSBhIGNvbXBhbnkgYW5kIGhvdyB0byZuYnNwO2ZvY3VzIGluIHRoZSBtb3N0IGltcG9ydGFudCBhcmVhcyw8YnIgLz4tIFdoYXQgYXJlIHRoZSBraW5kIG9mIHBlb3BsZSB5b3Ugc2hvdWxkIGhpcmUsPGJyIC8+LSBIb3cgdG8gZGVsaXZlciBhbiBhd2Vzb21lIHByb2R1Y3Qgb3Igc2VydmljZSBmb3IgeW91ciB1c2VycyBhbmQgY2xpZW50cy4mbmJzcDs8YnIgLz48YnIgLz48c3Ryb25nPldoYXQgaXMgWSBDb21iaW5hdG9yPzwvc3Ryb25nPjxiciAvPlkgQ29tYmluYXRvciBpcyBhbiBBbWVyaWNhbiBzZWVkIGFjY2VsZXJhdG9yIHdoaWNoIHByb3ZpZGVzIHNlZWQgZnVuZGluZyBmb3Igc3RhcnR1cHMuPGJyIC8+PGJyIC8+U29tZSBjb21wYW5pZXMgbWF5IG5lZWQgbm8gbW9yZSB0aGFuIHNlZWQgZnVuZGluZyB0byBzdGFydCwmbmJzcDtvdGhlcnMgd2lsbCBnbyB0aHJvdWdoIHNldmVyYWwgcm91bmRzLiBUaGVyZSBpcyBubyByaWdodCBhbnN3ZXI7IGhvdyBtdWNoIGZ1bmRpbmcgeW91IG5lZWQgZGVwZW5kcyBvbiB0aGUga2luZCBvZiBjb21wYW55IHlvdSdyZSBidWlsZGluZy4gQXQgWSBDb21iaW5hdG9yIHRoZSBnb2FsIGlzIHRvIGdldCB5b3UgdGhyb3VnaCB0aGUgZmlyc3QgcGhhc2UuIFRoaXMgdXN1YWxseSBtZWFucyBnZXR0aW5nIHlvdSB0byB0aGUgcG9pbnQgd2hlcmUgeW914oCZdmUgYnVpbHQgc29tZXRoaW5nIGltcHJlc3NpdmUsIGVub3VnaCB0byByYWlzZSBtb25leSBvbiBhIGxhcmdlciBzY2FsZS4gVGhlbiB3ZSBjYW4gaW50cm9kdWNlIHlvdSB0byBsYXRlciBzdGFnZSBpbnZlc3RvcnPigJRvciBvY2Nhc2lvbmFsbHkgZXZlbiZuYnNwO2FjcXVpcmVycy48YnIgLz48YnIgLz5JZiB5b3Ugd2FudCB0byByZWFkIG1vcmUgYWJvdXQgaXQmbmJzcDthbmQgZmluZCBvdXQmbmJzcDtob3cgdG8gYXBwbHkgeW91IGNhbiB2aXNpdCB0aGlzIDxhIHJlbD0ibm9mb2xsb3ciIHRhcmdldD0iX2JsYW5rIiBocmVmPSJodHRwczovL3d3dy55Y29tYmluYXRvci5jb20vYWJvdXQvIj5saW5rLjwvYT48YnIgLz48YnIgLz48c3Ryb25nPlNoYXJlIGFuZCBjb21tZW50PC9zdHJvbmc+PGJyIC8+V2hpbGUgeW91IGFyZSByZWFkaW5nIGFuZCB3YXRjaGluZyBvdXIgY29udGVudCwgeW91IGNhbiBhc2sgcXVlc3Rpb25zIG9yIHNoYXJlIHlvdXIga25vd2xlZGdlIHdpdGggdXMmbmJzcDtpbiBvdXImbmJzcDtkaXNjdXNzaW9uIGFyZWEuPGJyIC8+wqA8L3A+PHA+QWRkaXRpb25hbGx5LCB5b3UgY2FuIG1ha2UgY29tbWVudHMgYXQgdGhlIGVuZCBvZiBldmVyeSBtYXRlcmlhbC4mbmJzcDtPdXIgY29tbXVuaXR5IGFuZCB0ZWFtJm5ic3A7d2lsbCBiZSBnbGFkIHRvIGhlbHAgeW91IGFuZCBhbnN3ZXIgeW91ciBxdWVzdGlvbnMuPGJyIC8+wqA8L3A+