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    <link:label id="lab_us-gaap_PaymentsToDevelopSoftware_E6568E5355311DC8B5F896BB562EAD76_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToDevelopSoftware_E6568E5355311DC8B5F896BB562EAD76" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Capitalization of software and website development costs</link:label>
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    <link:label id="lab_cmpr_TermLoanDomain_8736EA3E20614E5DDA909125B2273525_label_en-US" xlink:label="lab_cmpr_TermLoanDomain_8736EA3E20614E5DDA909125B2273525" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Term Loan [Domain]</link:label>
    <link:label id="lab_cmpr_TermLoanDomain_8736EA3E20614E5DDA909125B2273525_documentation_en-US" xlink:label="lab_cmpr_TermLoanDomain_8736EA3E20614E5DDA909125B2273525" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Term Loan due on February 8, 2018 issued as part of amendment to credit facility on February 8, 2013</link:label>
    <link:loc xlink:href="cmpr-20181231.xsd#cmpr_TermLoanDomain" xlink:label="loc_cmpr_TermLoanDomain_8736EA3E20614E5DDA909125B2273525" xlink:type="locator" />
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    <link:label id="lab_cmpr_RevolvingLoanMaturityJune142023Member_A1E49F159FF48873D2C49125B227B5AA_documentation_en-US" xlink:label="lab_cmpr_RevolvingLoanMaturityJune142023Member_A1E49F159FF48873D2C49125B227B5AA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revolving Loan, Maturity June 14, 2023 [Member]</link:label>
    <link:loc xlink:href="cmpr-20181231.xsd#cmpr_RevolvingLoanMaturityJune142023Member" xlink:label="loc_cmpr_RevolvingLoanMaturityJune142023Member_A1E49F159FF48873D2C49125B227B5AA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_8CE7A47F3052363009C39125B2272601_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_8CE7A47F3052363009C39125B2272601" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_8CE7A47F3052363009C39125B2272601_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_8CE7A47F3052363009C39125B2272601" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_8CE7A47F3052363009C39125B2272601" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_F4EC2FF28147F3E385B39125B22800A1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_5CADE18FAB79A8AA61B69125B2281947_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_5CADE18FAB79A8AA61B69125B2281947" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_5CADE18FAB79A8AA61B69125B2281947" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditMember_DCB52387A9BB0212E7889125B229C8BD_label_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_DCB52387A9BB0212E7889125B229C8BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit [Member]</link:label>
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    <link:label id="lab_cmpr_SeniorNotesdue2022Member_EA5F232AA330EDA382F39125B229685B_terseLabel_en-US" xlink:label="lab_cmpr_SeniorNotesdue2022Member_EA5F232AA330EDA382F39125B229685B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Notes due 2022 [Member]</link:label>
    <link:label id="lab_cmpr_SeniorNotesdue2022Member_EA5F232AA330EDA382F39125B229685B_label_en-US" xlink:label="lab_cmpr_SeniorNotesdue2022Member_EA5F232AA330EDA382F39125B229685B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes due 2022 [Member]</link:label>
    <link:label id="lab_cmpr_SeniorNotesdue2022Member_EA5F232AA330EDA382F39125B229685B_documentation_en-US" xlink:label="lab_cmpr_SeniorNotesdue2022Member_EA5F232AA330EDA382F39125B229685B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior unsecured notes due 2022.</link:label>
    <link:loc xlink:href="cmpr-20181231.xsd#cmpr_SeniorNotesdue2022Member" xlink:label="loc_cmpr_SeniorNotesdue2022Member_EA5F232AA330EDA382F39125B229685B" xlink:type="locator" />
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    <link:label id="lab_cmpr_SeniorNotesdue2026Member_D63E4E6087A3E04867979125B22928BD_terseLabel_en-US" xlink:label="lab_cmpr_SeniorNotesdue2026Member_D63E4E6087A3E04867979125B22928BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Notes due 2026 [Member]</link:label>
    <link:label id="lab_cmpr_SeniorNotesdue2026Member_D63E4E6087A3E04867979125B22928BD_label_en-US" xlink:label="lab_cmpr_SeniorNotesdue2026Member_D63E4E6087A3E04867979125B22928BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes due 2026 [Member]</link:label>
    <link:label id="lab_cmpr_SeniorNotesdue2026Member_D63E4E6087A3E04867979125B22928BD_documentation_en-US" xlink:label="lab_cmpr_SeniorNotesdue2026Member_D63E4E6087A3E04867979125B22928BD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior unsecured notes due 2026.</link:label>
    <link:loc xlink:href="cmpr-20181231.xsd#cmpr_SeniorNotesdue2026Member" xlink:label="loc_cmpr_SeniorNotesdue2026Member_D63E4E6087A3E04867979125B22928BD" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_D31A70BAE79C838DE8859125B22AC94E_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_D31A70BAE79C838DE8859125B22AC94E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_D31A70BAE79C838DE8859125B22AC94E_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_D31A70BAE79C838DE8859125B22AC94E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_D31A70BAE79C838DE8859125B22AC94E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_9FA3D9C4D3D9BC65222B9125B22A4FBB_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_9FA3D9C4D3D9BC65222B9125B22A4FBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_9FA3D9C4D3D9BC65222B9125B22A4FBB_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_9FA3D9C4D3D9BC65222B9125B22A4FBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_9FA3D9C4D3D9BC65222B9125B22A4FBB" xlink:type="locator" />
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    <link:label id="lab_cmpr_FinancialCovenantTypeAxis_3F732D8B4E6234838C499125B22C1B67_terseLabel_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeAxis_3F732D8B4E6234838C499125B22C1B67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Covenant, Type [Axis]</link:label>
    <link:label id="lab_cmpr_FinancialCovenantTypeAxis_3F732D8B4E6234838C499125B22C1B67_label_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeAxis_3F732D8B4E6234838C499125B22C1B67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Covenant, Type [Axis]</link:label>
    <link:label id="lab_cmpr_FinancialCovenantTypeAxis_3F732D8B4E6234838C499125B22C1B67_documentation_en-US" xlink:label="lab_cmpr_FinancialCovenantTypeAxis_3F732D8B4E6234838C499125B22C1B67" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Our credit agreement contains financial covenants calculated on a trailing twelve month basis.</link:label>
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